Economic development and industrialization in most emerging countries are causing raw material prices on the world market to rise rapidly. The price ratio between copper and aluminum has risen to a factor of 1:4, which in turn makes aluminum an interesting wiring material for many industries.
The ease of handling and, in particular, the ability to install aluminum wires / aluminum cables that are up to 70% lighter make customers rethink their approach, especially when it comes to wire cross-sections larger than 16 mm². When connecting such aluminum conductors in electrical connection technology, a number of general conditions must be met to ensure that the conductor is contacted safely and with long-term stability at the clamping point.
Aluminum conductors for indirect connection using
- Ring cable lugs
- Press connection bolts
- Cu/Al washer (CUPAL)
Aluminum conductors for direct connection(3 steps)
- Scratching
- Greasing
- Connecting
Scratch the oxide layer off the bare wire, for instance using a penknife.
Grease the aluminum wire with a neutral grease.
Direct connection in the WPD terminal blocks.
This is a YouTube video. By clicking on this video, you agree to Google/YouTube's Privacy Policy & Terms of Use . You also agree to our Privacy Policy.
Weidmuller's WPD terminal blocks enable a simple, safe and cost-effective transition from aluminum wires or aluminum cables to copper wires within the switchgear.
For example, a supply line of the switchgear can use aluminum conductors on one side of the WPD terminal block, while the other wiring on the opposite side of the terminal block is completed with copper conductors.
The pretreatment for the aluminum conductor and the required torques are stated in the corresponding product data sheets.
Customer Service - USA
Technical Support - USA
